Car-bolster



Ho. 622,465. Patented Apr. 4, 5899.-

a. L. HARVEY.

CAR BOLSTER.

(Applicat ion filed. Sept. 19, 189B.)

2 $haets8heet L (No Model.)

1n: NORRIS PETER: ca, wumucruu, u. c.

Patented Apr. 4-, 8899 G. L. HARVEY.

' GAR BOLSTER.

(Application filed. Sept. 19, 1898.) I

2 sheets-sheet 2.

(No Model.)

rm: nomus PKTZRS co 115mm: 0 a c ra'rns trims.

GEORGE L.

clnn sotsrs.

SPECIFICATION forming pater setters Eatent No. 622,465, dated April 4, 1899.

Application filed September 19,

1898. .Serial No. 691,354. (No model.)

To (all whom it may concern:

Be it known that I, GEORGE L. HARVEY, of Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Car-Bolsters, of which the following is a specification.

This invention relates "to car-bolsters, and more" particularly to metallic-body bolsters, produce a bolster which shall be light, strong, and durable and adapted to beproduced at a comparatively small cost and without the use of special machinery.

To these ends my invention consists in certain novel features, which I-will now proceed to describe and will then particularly point out in the claims.

' In the accompanying drawings, Figurel is I an elevation of a bolster embodying my invention in one form; Fig.2, an enlarged View I of one-half of the structure shown in Fig. 1; Fig. 3, a plan view of so much of the structure as is shown in Fig. 2; Fig. 4, a detail'sectional view taken on the line 4 4 of Fig. 2; and Fig. 5, a similar view taken-011 the line 5 5 of Fig. 2, the center pin being omitted.

In the said drawings, indicates the tension member of my improved bolster, which preferably consists of a flat plate or bar of wrought metal, and 11 the compression member, which is also preferably formed from a similar fiat plate or bar. These members are separated at their central portion and converge to a meeting at each end, and to produce this structure-one orboth of the members may be bent to the desired form. In the present instance I have shown the tension member as straight, while the compression member has a straight central portion and upwardly-inclined portions on each side thereof, terminating in straight end portions, which lie parallel with and against the under side of the tension member. The endsof the compressi on and tension members are secured to gether by riveting, bolting, or otherwise, as indicated at 12, and in order to more firmly unite the structure and relieve the rivets or bolts from strain one of the members is headed or bent up for engagement with the end of the other 1nember--as for instance, in the construction shown, wherein the tension member 10 is bent to form a head 13 at each of its ends of the compres continuous rigid side bearings and between the upper and lower -rnembers of the bolster. The central member 14 is preferably I-shaped in cross-section, as indicated in Fig. 4:, and'is connected to the upper and lower members of the truck by riveting or otherwise and'is provided at'its ends with sleeves 15 to receive the bolts 16, which secure the side bearings 17 to theunder side of the bolster, these bolts 16 being in some cases extended upward, as indicated in dotted and serving to connect the bolster to these sills. The outer ends of the side bearings may be secured by bolts 18, passing through the upper and lower members of the bolster, and through sleeves said members. The central member is also provided with a central sleeve 20 to receive the center pin 21 and with sleeves 22 to receive the bolts 23,which may beextended up ted lines. V

WVhen the central member 1-1: is made in separate pieces secured together, asindicated portions between the sleeves 22 with a transverse web 24, to which a similar transverse web 25 at each end of the central portion is secured by riveting or otherwise, said webs and extended hearing. The end portions are provided with lateral extensions of their'upper and lower flanges, the ends whereof are bent at right angles, overlap theedgcs of the upper and lower members of the bolster and further insure rigidity of the relations between the upper it should form when united and in place a, strut extending between the 19, interposed between through the center sills, as indicated in dotas indicated at 26, to

lines, through the intermediate sills of the car I in Fig. 3 of the drawings, I provide the side abutting against each other to give a firm v the bolster,

' ster which is adapted toresist the transverse strains which are brought thereon by the intermediate sills or bearings at points between the center bearing and the extreme ends of so that the bolster will not have sag at the side bearings found. in bolsters as or The wrought metal plates which compose the upper and lower that tendency to which is frequently members of the bolster may be readily ob-' tained in the open market, being commercialshapes, and may be readily bent to the desired form without special machinery. The bolster as a whole, comprising the wroughtmetal top and bottom members and the cast or pressed central member, is light,-strong, and durable, particularly in respect to the resisting of the transverse strains hereinbefore pointed out.

I do not wish my invention to the precise struction -hereinbefore specified, and shown in the drawings, "as it is obvious that these minor features may be varied without departing from the principle of my invention. I claimi 1. A metallic ear-bolster, comprising two members separated at their middles and converging at their ends, one of said members having a eentralbearing-point and side bearing-points intermediate said central bearing-j point and the ends of the bolster, and a central member forming a continuous rigid strut longitudinally of thebolster from one side bearing to the to be understood as limitingdetails of con-' other and vertically from the lower to the upper member, substantially asdeseribed.

2. A metallic ear-bolster, comprising two unitary or continuous members separated at' their middles and converging at their ends, one of said members having a central bearing-point and side bearing-points intermediate said central bearing-point and the ends of the bolster, and a central met her forming a continuous rigid strut extending longitudi nally of the bolster from one side bearing to the other and vertically thereof from. the lower to the upper member, substantially as described.

3. A metallic car-bolster, comprising two members separated at their middles and converging at their ends and a central member comprising a central vertical web with lateral flanges at its upper and lower edges, whereby it is riveted. to the first-mentioned members, said central member forming a continuous rigid strut extending longitudinally of the center of the bolster the other and vertically lower to the upper member, described.

4. A metallic car-bolster, comprising two wrought-metal members separated at their middles and converging to contact at their ends,-and a central cast-metal memberI- shaped in cross-section and forming a continuous rigid strut extending longitudinally of the bolster from one side bearing to the other and vertically thereof from the lower to the upper member, substantially as described.

' G JORGE L. HARVEY.

thereof from the substantially as Witnesses:

FREDERICK 0. Gooowm, Invmn MILLER.

thereof from one side bearing to 

